Efficient and durable H2 production from NaBH4 methanolysis using N doped hybrid g-C3N4-SiO2 composites with ammonia as a nitrogen source
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Tarih
2022
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this study, a hybrid g-C3N4-SiO2-N composite was successfully produced in three stages by calcination and hydrothermal methods. The g-C3N4-based composite catalyst obtained by both N-doping and SiO2 addition was used in H2 production from NaBH4 methanolysis for the first time. In the NaBH4 methanolysis reaction, the electron-rich and electron-deficient surface regions formed on this catalyst surface with modifications made the electron transfer more efficient and significantly improved the catalytic performance. The maximum HGR was found to be 11400 mL min?1 g?1 at a concentration of 0.25 g NaBH4. The obtained HGR value shows that the g-C3N4-SiO2-N catalyst obtained in three steps has achieved its purpose. The activation energy (Ea) was calculated as 33.2 kJ mol?1. g-C3N4-SiO2-N demonstrated good durability, retaining 71% of the initial catalytic activity after five consecutive experiments. © 2022 Elsevier Ltd
Açıklama
Anahtar Kelimeler
g-C<sub>3</sub>N<sub>4</sub>, Hydrogen, Nitrogen doping, SiO<sub>2</sub>, Sodium borohydride
Kaynak
Fuel
WoS Q Değeri
Scopus Q Değeri
Q1
Cilt
324
